研究目的
To demonstrate the possibility to record magnetoencephalographic (MEG) signals with Optically Pumped Magnetometers (OPMs) based on the parametric resonance of 4He atoms at room temperature.
研究成果
The study confirms that room temperature vector 4He OPMs can record MEG signals and provide reliable information on brain activity, with the potential for further improvements in sensitivity and the development of multi-channel configurations.
研究不足
The study is a preliminary proof of concept with a limited number of subjects and sessions. The sensitivity of the OPMs is currently lower than that of SQUIDs, and the study did not explore the full potential of multi-channel OPM configurations.
1：Experimental Design and Method Selection:
The study involved cross-validation of MEG signals recorded with OPMs and SQUIDs on a brain phantom and a healthy subject.
2：Sample Selection and Data Sources:
A brain phantom and a healthy subject were used for MEG recordings.
3：List of Experimental Equipment and Materials:
Optically Pumped Magnetometers (OPMs) based on 4He atoms and Superconducting Quantum Interference Devices (SQUIDs) were used.
4：Experimental Procedures and Operational Workflow:
MEG signals were recorded consecutively with OPMs and SQUIDs for both the brain phantom and the healthy subject.
5：Data Analysis Methods:
The data were analyzed to compare the signals recorded by OPMs and SQUIDs, focusing on latency and morphology of the signals.
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